D = v^2 / 2ug
d= 3.5^2 / 0,15 x 9.8 m/s^2
the answer should be around 4.2m
hope this helps
Answer:
386.6 A
Explanation:
We are given;
Solenoid length; L = 10 cm = 0.1 m
Number of turns; N = 247
Magnetic field; B = 1.2 T
Now, at the centre of a long solenoid of N turns/metre carrying a current(I), the formula for the magnetic field is given as;
B = μ_oNI/L
Making I the subject we have;
I = BL/μ_oN
Where μ_o is the vacuum of permeability and has a constant value of 4π × 10^(−7) H/m
Thus;
I = (1.2 × 0.1)/(4π × 10^(−7) × 247)
I = 386.6 A
Answer:
a barometer is used to measure atmospheric pressure, and a manometer is used to measure gauge pressure.
Explanation:
A barometer measures air pressure at any locality with sea level as the reference.
However, a manometer is used to measure all pressures especially gauge pressures. Thus, if the aim is to measure the pressure at any point below a fluid surface, a barometer is used to determine the air pressure. The manometer may now be used to determine the gauge pressure
The algebraic sum of these two values gives the absolute pressure.
Answer:
The speed of a turtle is 4m/s
Explanation:
speed = distance/time
distance = 100m
time = 25s
s = 100/25
= 4m/s
Before you step on the brakes, the car has kinetic energy, when you step on the brakes, it turns the kinetic energy into heat (thermal energy). When it stops completely, it has potential energy. Hope this helped :)
